12541636 has 6 divisors (see below), whose sum is σ = 21947870. Its totient is φ = 6270816.

The previous prime is 12541603. The next prime is 12541637. The reversal of 12541636 is 63614521.

It can be written as a sum of positive squares in only one way, i.e., 9884736 + 2656900 = 3144^2 + 1630^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12541637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1567701 + ... + 1567708.

Almost surely, 2^12541636 is an apocalyptic number.

It is an amenable number.

12541636 is a deficient number, since it is larger than the sum of its proper divisors (9406234).

12541636 is a wasteful number, since it uses less digits than its factorization.

12541636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135413 (or 3135411 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 12541636 is about 3541.4172304319. The cubic root of 12541636 is about 232.3368323696.

The spelling of 12541636 in words is "twelve million, five hundred forty-one thousand, six hundred thirty-six".